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Air Quality Conformity

On July 25, 2013, the DVRPC Board adopted the “Transportation Conformity Determination: FY 2013 Pennsylvania TIP, FY 2014 New Jersey TIP and Connections 2040 Long-Range Plan”. This is the current transportation conformity determination and replaces the previous determination adopted in June 2012.

The Federal Clean Air Act and the transportation planning provisions of Title 23 and Title 49 of the United States Code are intended to ensure that integrated transportation and air quality planning occurs in the areas that do not or previously have not met the National Ambient Air Quality Standards (NAAQS). These areas, known as nonattainment or maintenance areas, require a process to demonstrate that transportation projects included in the region's long-range plan [Plan] or Transportation Improvement Program [TIP] are not going to impede a region's progress towards meeting or maintaining the federal air quality standards.

Transportation conformity is the federally mandated, analytical process, through which Metropolitan Planning Organizations [MPO] demonstrate that the transportation investments, strategies and programs, included in the Plan and TIPs are consistent with air quality goals established in State Air Quality Implementation Plans [SIP] for achieving the NAAQS. Conformity demonstrations show that emissions from projects in transportation plans do not exceed the SIP targets ("budgets") for emissions from mobile sources.

The nine-county DVRPC planning area is part of:

  • Philadelphia-Wilmington-Atlantic City Ozone Non-Attainment Area
  • Philadelphia-Wilmington, PA-NJ-DE PM2.5 Non-Attainment Area
  • New York - Northern New Jersey - Long Island, NY-NJ-CT PM2.5 Non-Attainment Area
  • Three Carbon Monoxide(CO) Maintenance Areas.

Adopted Conformity Document

The DVRPC Board adopted the following document in July 2013. This is the CURRENT Transportation Conformity document for:

  • the FY 2014-2017 TIP for New Jersey,
  • the FY 2013-2016 TIP for Pennsylvania,
  • and the Connections 2040 Long-Range Plan.

"Transportation Conformity Determination: FY 2013 Pennsylvania TIP, FY 2014 New Jersey TIP, and Connections 2040 Long-Range Plan" [0.4 MB .pdf] and Full Executive Summary [0.3 MB .pdf]

For more information on transportation conformity, visit FHWA or EPA webpages.